A user on Reddit's r/LocalLLaMA subreddit is experiencing a technical issue where their NVIDIA RTX 3090 GPU is only operating at PCIe Gen 1 speeds when passed through to a virtual machine. The GPU functions at its expected Gen 4 speed on the host system (Alpine Linux) but drops to Gen 1 (2.5 GT/s) once the virtual machine (Nobara Linux) is active. The user has attempted several troubleshooting steps, including adjusting QEMU settings and modifying kernel parameters, but has not resolved the problem. They suspect a potential bug within NVIDIA's open kernel modules that causes the PCIe link to retrain to a slower speed upon VM startup. AI
IMPACT This issue impacts users attempting to run local AI models via virtual machines, potentially hindering performance.
RANK_REASON User troubleshooting a specific hardware/software configuration issue for local AI deployment.
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